Machine for roll-finishing seamless balls



(No Model.)

A BISBEE & J. T. BACON. v MAGHINBPOR ROLL FINISHING SEAMLBSS BALLS.

No.322,343. I I Patented Jul-y 14,1885g WIT/E5555,

aM%/% I u PETERS. mama-0 m". wi'nl mn. o. a

UNITE STATES PATENT Orricn,

ALBERT BISBEE. AND JOSEPH T. BACON, OF PLAINVILLE, MASSACHUSETTS. I

MACHINE FOR ROLL-FINISHING'SEAMLESS BALLS.

SVPECIFIGATION forming part of Letters Patent No. 322,343, dated July 14, 1885. Application filed April 3, 1884. (No model.)

To all whom it may concern.-

Be it known that we, ALBERT BISBEE, and J OSEPH '1. BAooN, of Plaiuville, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Machines for Roll-Finishing Seamless Balls, of which the following is a specification.

The nature of our invention consists in the improved construction and arrangement, of the several parts, whereby the machine is improved in its action and made convenient in operation.

Figure 1 representsa vertical section of the machine. Fig. 2 is a face view of one of the annular grooved dies in which the partiallyfinishedballs are finished by rolling.

In the accompanying drawings, A represents a section of the bench or table to which the machine is attached, and upon the upper side of the table A is secured the circular bed-piece B, which is bored out at its center to receive the upright shaft 0, to the upper portion of which is secured the wheel D, held upon the shaft by means of the shoulder a and nut b, or otherwise. The lower, end of the shaft 0 is made square in its cross-section, in order to fit the driving-socket E, and the upper end of the shaft 0 is provided with a circular groove adapted to receive the transverse tangential pins 0 c, which serve to prevent the removal of the swivel-cap F from the end of the shaft 0, to which it is loosely secured. The swivel-cap F is pivoted to the lever G, which is jointed to the fixed standard H, and when the machine is in operation the outer end of the lever is held under the handscrew I, passing through the upper end of the slotted bar J, which is pivoted to the stand K, secured to the top of the table or bench A.

To the under side of the table or bench is secured the plate M, to which are attached the hangers N N, for the bearings of the driving-shaft 0, upon the end of which is placed the bevel-gear P, which engages with the gear Q, secured to the lower end of the shaft R, which'is held in the upright bearing-sleeve S, secured by a flange at its upper end to the plate M. vA perforation, d, is made through the table to provide room for the enlarged 5o socket-head E of the upright shaft.

The bed-piece B and wheel D are each provided with a recess, e, adapted to receive the annular dies T T, which are provided at their adjacent faces with a groove, f, made semicircular in its cross-section, and the annular dies may be secured to the bed-piece B and wheel D by means of dowel -pins, screws, or otherwise.

In the. manufacture of seamless balls from sheet metal, the sheet-metal blank is first struck up into the form of a cylindrical cup with a convex bottom.

the open end of the cup, so as to bring it to a spherical or ball shape, and then a number of the balls so formed are to be placed in the groove f between the dies. The die '1" is then to be lowered and properly adjusted upon the balls, and a rapid motion given to the wheel D, so that the ballscontained in the groove will be rolled and smoothed, and at the same time thoroughly polished.

The cup so formed is then placed in a die, which operates to close To remove the balls from the die, the handthe required degree of pressure upon theballs held in the groove f. Removable dies T T, having grooves of larger or smaller size, may be inserted into the recesses e, in order to adapt the machine for finishing and polishing balls of different sizes.

We are aware that it is not new toy roll-finish seamless hollow balls between circularlygrooved dies, and therefore make no claim to such grooved dies, but only to the improved construction of the machine in which the grooved dies are employed. i

We claim as our invention 1. The combination of the shaft R, provided at its upper end with a socket, E, with a stationary bed-piece, B, to which is secured a die, T, having an annular groove, f, ade semicircular in its cross-sectiomthe shaft 0, and wheel D, provided with the die T, having an annular groove, f, also semicircular in IOC its cross-section, and means for raising and the shaft C, and means for raising and lower-- lowering the wheel D, substantially as and for ing the wheel D, substantially as described.

the purpose specified.

2. In a machine for roll-finishing seamless ALBERT BISBEE' 5 balls, the combination of the Wheel D, pro- JOSEPH BACON vicled with the annular (lie T, and shaft 0, \Vitnesses: with the stationarybed-piece B, provided with SANFORD DAGGETT,

the annular (lie T, and forming a bearing for H. lVI. DAGGETT, J1. 

